Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10374717 | Signal processing device, transmitting and receiving device, and signal processing method | Hiroshi Ogiwara | 2019-08-06 |
| 9989786 | Optical transmission device, optical modulator, and bias control method | Hiroshi Ogiwara, Yuichi Akiyama | 2018-06-05 |
| 9479249 | Optical transmission system and optical transmission device | Taketo Endo, Hisayuki Ojima, Shoichi Murakami | 2016-10-25 |
| 9444572 | Transmission device and transmission method | Norifumi Shukunami, Hiroki Oi | 2016-09-13 |